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Product Overview
![PD Meter Model HX-400](https://static.wixstatic.com/media/97d7ac_0aae23032cc14802a310ea8d631b3d48~mv2.png/v1/crop/x_0,y_76,w_1080,h_1000/fill/w_473,h_438,al_c,q_85,usm_0.66_1.00_0.01,enc_auto/PD%20Meter%20Model%20HX-400.png)
Cal Coast HX-400 PD Meter
Cal Coast's Digital Pupillometer.
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Effective measurement range:
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Binocular pupillary distance: 45 ~ 82mm
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Left or right pupillary distance: 22.5 ~ 41mm
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Step: ∞, 2m, 1m, 65cm, 50cm, 40cm, 35cm, 30cm
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Indication Error: ≤ 0.5mm
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Asymmetrical Error: ≤ 0.5mm
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Rounding Error: ≤ 0.5mm
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Distance of target: 30mm
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Power source: 5# AA batteries/2*1.5V
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Size and weight:
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221mm (L) x 166mm (W) x 63mm (H) 0.64kg
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